This is a 1:1 cad model created in Solid Edge.Included are step files of the assembly model as well as the 2 individual parts making up the assembly.

The actual size of the Goodyear Optitrac 440/65R24 tractor tire depends on whether you are looking at its unmounted/mounted inflated dimensions or its loaded dimensions.

Overall diameter (mm) - 1280Width (mm) - 422Tread Depth (mm) - 41Rim Diameter = 28" x 25.4 = 711.265 is the aspect ratio, meaning the sidewall is 65% as tall as it is wide

Static Loaded radius (mm) - 588 (the distance from the center of the wheel to the ground when under maximum rated load)

Rolling circumference (mm) - 3890

SRI - 625Weight (kg) - 82Nominal Inflation Pressure (bar) - 1.6Maximum Load (kg) - 1950

Recom 'd Rim Width - W14LOther approved rims - W13, W14L, W15LThe W stands for a drop-center rim typically used in agricultural tires, and the number denotes the exact rim width in inches14 x 25.4 = 355.6Note: Agricultural 'W' and 'DW' rims have a standard 5° bead taper, with 'DW' denoting a double drop-center profile which aids in mounting wider radial tires